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Summary of Review of Annual Hydrology Report <br />Mine: Keenesburg Mine Date of review: 27 July 2012 <br />Permit No.: C-1981-028 DRMS reviewer: Jared Ebert <br /> <br />Report Year: 2011 <br />Submitted by: Coors Energy Company <br />Date received <br /> by Division: February 28, 2012 <br /> <br />Require- <br />ment <br />Requirement <br />Requirement complied Comment <br />citation <br />with? <br />(yes / no) <br />A. Filing frequency CDRMS <br />Page 117, 2.05.4 (2) states they will submit the report at <br />yes <br />of hydrology regulation <br /> <br />the end of February each year. <br />report 4.05.13(4)(c) <br />End of <br />February <br />B. Timely filing of (page 117 of <br />yes <br /> <br /> <br />hydrology report permit <br />application <br />C-81-028 <br />C. Filing frequency <br />of NPDES <br />n/a <br />Discharge <br /> <br />Monitoring <br />Reports <br />D. Timely filing of <br />Discharge <br />n/a <br /> <br /> <br />Monitoring <br />Reports <br />The Keenesburg Mine does not discharge surface waters <br />beyond its boundaries and, therefore, has not caused <br />E.NPDES discharge <br />exceedances of instream numeric standards in the South <br />n/a <br /> <br /> <br />limitations <br />Platte River basin. The Colorado Water Quality Control <br />in <br />1997 after finding that no surface discharges from the site <br />are likely. <br />CWQCC <br />F. Basic Standards <br />yes <br />regulations <br /> <br />for Surface Water <br />3.1.11 <br />CWQCC <br />G. Instream Numeric <br />yes <br />regulation <br /> <br />Standards <br />3.3.0 <br />CWCC <br />H. Antidegradation <br />regulations <br />yes <br />Rule for Surface <br /> <br />3.1.9(2) and <br />Water <br />3.3.0. <br />I. Sampling <br />frequency at There have been no discharges of surface water from the <br />n/a <br /> <br /> <br />surface water site for several years. <br />monitoring sites <br />Page 1 <br />